唱词的英语怎么说

唱词的英文：
libretto

• The first line serves to introduce the mood, while the second line enunciates the theme.
  唱词上句起兴，下句点明主题。
• A chorus line
  (歌舞喜剧中的)歌舞队唱词.
• And needless to say, I would love to be of assistance in translating opera librettos
  不用说，我也愿意协助翻译京剧唱词。
• The tunes, too, match the two-part, four-line format.
  曲调则全部是上下句体、4句唱词分两遍唱完。
• They have four lines arranged in a folk meter, whereby the lines are not standard seven-word ones.
  "花儿"的唱词为4句民间格律体，即它们不是规整的七言句式